Doorbell live voice stutters


Recently my eufy doorbell is suffering from stuttering voice which makes it impossible to hear what visitors are saying. The voice live is broken and like it’s buffering. I have reset the doorbell a couple of times still no change. On watching live it is fine but as soon as the doorbell two way audio is activated it starts. The recordings are fine and voice can be heard clear and undistorted.

Any ideas has there been an update causing issues as it worked fine to begin with and now it’s not. Doorbell is about 2 meters from the router and hub. I have restarted the router also.

Thank you